Corn-harrow



(No Moldel.)

A. DOWNING.

com: HARRUW. y No.,551,435. Patented Deo. 17, 1895l ANDREW B GRAHAM, PHQTG'UTHQWASHI NGTON. [1C

UNITED STATES PATENT OEETCE.

ARTHUR DOVNING, OF SHELL ROCK, IOVA.

CORN-HARROW.

SPECIFICATION forming part of Letters Patent No. 551,435, dated December 17, 1895.

Application ne@ August le, 1895. serial No. 559,482. on man.)

To @ZZ whoml zt may concern.-

Be it known that I, ARTHUR DowNiNe, a citizen of the United States, residing at Shell Rock, in the county of Butler and State of Iowa, have invented certain new and useful Improvements in Corn-Harrows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a-ppertains to make and use the same.

This invention relates to an improvement inharrows, and it consists in the construction and arrangement of parts hereinafter described, and definitely pointed out in the claims.

The object of the invention is to form an improved harrow having improved means for varying the width` thereof, improved means for enabling an easy transportation of the same, and in so forming and arranging' the several parts that a very useful, inexpensive and durable harrow is provided.

The invention is illustrated in the accompanying drawings, wherein like letters of reference designate corresponding parts in the `several views, and in which` Figure I is a plan view showing parts in 'dotted lines adjusted to different positions.

Fig. 2 is aside elevation. Figs. 3 and e are sections on the lines ma@ and y ly, respectively, Fig. l.

In the drawings, A A designate two rectangular frames, composed of two parallel tooth-bars a, iixedlysecured at their outer ends by the cross-bars B B. The cross-bars B extend laterally beyond the frames and have pivoted to their outer ends the laterallyadjustable side tooth-bars A2 A2. The bars A2 entend back slightly beyond the ends of the frames A A and 'are connected to the rear cross-bars B by the pivoted levers C and links C'. The levers are pivoted back from their link ends by the pivots c carried by the bars B', and their outer ends have the handles c' thereon carrying the springhand-levers c2 which actuate the dog c8 through the medium of the connecting-rods c4. The dogs engage with the rack-segments C2 on the cross-bars B'. By shifting the levers C laterally the ends of the bars A2 are moved out or in, as the case maybe, and through the instrumentality of the dogs and racks are held in their shifted or adjusted positions.

To supportthe central portion of the frames and bars A2, central curved cross-bars D are secured to the bars of the frame. The curved bars D are surmounted by the parallel guidebars D arranged slightly above the same to form intermediate spaces in which the curved tongues D2, secured to the bars A2, work. By this means al sliding connection is formed between the central portion of the frames and sides A2, acting throughout the entire movement of the sides A2. As the sides A2 move in thel arc of a circle, the bars D Dl and tongues D2 are correspondingly curved. The inner ends of the bars B are bent up at right angl es and their upper ends bent in and overlap each other, as at E, at which point a pivot-bolt e is passed through the same.

The inner ends of the bars B are carried in beyond the frames and then bent up vertically, as at b, their upper points being bent horizontally and overlapped, as at b'. Each vof the overlapping ends is perforated at b2 throughout, and the securing-bolts h3 are passed through two or more of the perforations for securing the parts together.

When it is desired to vary the distance between the rear ends of the frames, it is only necessary to remove the blts b3 and move the overlappin g points h out until the proper perforations register and then reinsert the bolts. The forward point of the machine needs no adjustment, but permits the rear adjustment through the medium of the pivotbolt e.

- By means of the above-described construction it will be seen that a very strong structure is formed and that the frame can be relatively adjusted, while the cuter bars are permitted an independent adjustment.

For transporting purposesa wheeled frame F is formed, consisting of the vertical portions f, on the lower ends of which are formed stub-axles carrying the wheels F'. The upper ends of the parts f are bent inward at right angles, forming the arms f', which are journaled in suitable aboxes f2 on the top of the inner tooth-bars of the frames. From the boxes the arms f are benthorizontally at right angles, forming the extensions f3, while the ends of the extensions are bent inward and flattened, as at f 4, and overlapeachother. Each of the overlapping' ends is provided with a series of perforations fthrough which the bolts f6 maypass, and by which the parts may be adjusted in a manner similarl to that of the rear yoke connection of the back bars E. The frames F are, as will be seen,com posed of the inulto-cranks, consisting of the parts j', f', f3 and fAl adjustably connected at their inner ends. The wheels occupy a position within the plane of the space between the bars of the frames A A, so thattheymay be moved to points below or above the frames. To move the wheels a lever VGr is secured to one of the cranks or portions f3 and extends beyond the same. This lever is in line with the vertical portion `of the rear yoke,;and is formedrof .laterall'y-yielding material, which, when lowered, engages the ratchet-teeth t, formed on, the yoke. yThese teeth serve VAto hold the Alever G in ,its lowered position `and the wheels below the frame. lYhe-nthe svheels are raised to lpoints above the frame the leiter is moved slightly forward beyond the boxes 2 5 f2 and the overlapping sectionsfof the wheelframes are engaged by a catch or inclined tooth ,7L formed on ,-a rod Il, pivoted to :the front yoke and .extending to the rear of vthe machine.

L designates :the handles vat :the rear.

At the front of the bars care :the .clevises m connected, respectivcl y, by the .drafztbars n adjustably or removably secured in place.

O designates the tongue having :the brace T ,at its irear `end for-med with the `downwardly-extending arms o perforated to receive .the drajltbars. Clips n .on the ybars ,vnf are :arranged to hold the arms in iarions positions on the bars n when the lineofdraft is .changed orto be altered.

In operation, when lthe width Aof the harrow is to be varied, it is only necessary toadj ust the side bars or when the frames are to be relatively adjusted to remove the connection between theoverlapping ends ofthe con necting-bars, as above stated.

rlhe peculiar formation of the mn-lto-cra-nk- `wheel frames enables the wheels to be forced below or above the frames and bythe ratchetteeth t and rod Il are held in their proper positions.

The weight of the wheels will hold the connected portionof the wheel-frame against :the shoulder of the catch 72, on the bar II.

By elevating the tongue the doubletrees .are carried above the plane of the corn, .and by forming the arches .corn `can pass between the frames. The purpose .of adjusting the sides A2 is -to carry the .outer .teeth in `proper position relative to the rows, and to vary the cultivation according to the exposure of the roots, dac.

Having thus described the invention, what isclaimed as new, land desired to be secured by Letters Patent, is-

l. In a harrow, the combination with the two side frames, pivotally united at their forward ends, a laterally adjustable connection between the rear .ends thereof, comprising a yoke having overlapping ends and adjustable means vfor-securingthe ends together, a wheel frame intermediate the ends of and between the frames, consisting of .two 1nulto.cranks, each carrying wheels vat their outer ends, between lthe bars of the frames, means for `pivotallyrsecuring `,the lcranks to vthe frames, yadjnstably `connected overlapping inner ,portions on .the cranks, a lever connected with one ,of .the cranks, securing .meansion the rear connection with which the lever engages, and a .pivoted catch engaging .the wheel frame, when the lever is forced forward, said catch having an extension projecting to the rearof` .the machine, substantially as described.

2. Ina `harnom the Icombination with the .laterally.adjustable frames, .of the laterally adjustable side bars, kthe curved connecting bars for the frames, and the curved bars lon the side bars, -slidingly engagmg .theeurved connecting bars, and means for adjusting the side bars, substantially .as described.

3. In a .harrow, -the combination with the side frames., `of .a wheel frame consisting of the vertical sections, each carrying wheels at their lower ends, the inwardly `extending horizontal sections, j ournaled on the frames, the rearwardly .extending-sectionsf3, the overlapping adjusta-bly connected sections, .and means for moving sthe frame, .substantially as describe-d.

4:.. In a harrow, the combination with the .adj ustable sections, and the ad instable `transportation wheels, .of the draft bars .at the frontof the harrow, the tongue havinga cross bar ,at its rear, .downwardly Aextending arms on the .cross bar, and 1adjustable means for securing the .arms to the :draft bars, substantiallyT` as described.

In testimony whereof I affix any signature in presence of two witnesses.

ARTHUR DOVNING. lVitncsses S. DowNING, Cans. A VAN VLACK.

IOC) 

